*** This bug is a duplicate of bug 1745516 ***
    https://bugs.launchpad.net/bugs/1745516

Thank you for taking the time to report this crash and helping to make
this software better.  This particular crash has already been reported
and is a duplicate of bug #1745516, so is being marked as such.  Please
look at the other bug report to see if there is any missing information
that you can provide, or to see if there is a workaround for the bug.
Additionally, any further discussion regarding the bug should occur in
the other report.  Please continue to report any other bugs you may
find.

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https://bugs.launchpad.net/bugs/1751481/+attachment/5061990/+files/Disassembly.txt

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** This bug has been marked a duplicate of bug 1745516
   gnome-shell crashed with SIGSEGV in  g_type_check_instance_cast → 
st_label_get_text → append_actor_text → st_describe_actor → ffi_call_unix64 ()

** Information type changed from Private to Public

** Tags removed: need-amd64-retrace

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https://bugs.launchpad.net/bugs/1751481

Title:
  gnome-shell crashed with SIGSEGV in g_type_check_instance_cast()

Status in gnome-shell package in Ubuntu:
  New

Bug description:
  Not sure. Updated to 18.04. Later I purged all installed grub files,
  purged their config files and reinstalled them just how they were
  installed. Right after purging the files using synaptic, gnome-shell
  hang up and restarted after a few whiles... After that the error
  popped up.

  ProblemType: Crash
  DistroRelease: Ubuntu 18.04
  Package: gnome-shell 3.26.2-0ubuntu3
  ProcVersionSignature: Ubuntu 4.15.0-10.11-generic 4.15.3
  Uname: Linux 4.15.0-10-generic x86_64
  ApportVersion: 2.20.8-0ubuntu10
  Architecture: amd64
  CurrentDesktop: GNOME
  Date: Sat Feb 24 17:11:11 2018
  DisplayManager: gdm3
  ExecutablePath: /usr/bin/gnome-shell
  InstallationDate: Installed on 2017-12-27 (59 days ago)
  InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018)
  ProcCmdline: /usr/bin/gnome-shell
  ProcEnviron:
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=de_DE.UTF-8
   SHELL=/bin/bash
  SegvAnalysis:
   Segfault happened at: 0x7fc5532d1d12 <g_type_check_instance_cast+34>:        
mov    (%rdi),%rbp
   PC (0x7fc5532d1d12) ok
   source "(%rdi)" (0x00000001) not located in a known VMA region (needed 
readable region)!
   destination "%rbp" ok
  SegvReason: reading NULL VMA
  Signal: 11
  SourcePackage: gnome-shell
  StacktraceTop:
   g_type_check_instance_cast () from 
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
   st_label_get_text () from /usr/lib/gnome-shell/libst-1.0.so
   ?? () from /usr/lib/gnome-shell/libst-1.0.so
   st_describe_actor () from /usr/lib/gnome-shell/libst-1.0.so
   ffi_call_unix64 () from /usr/lib/x86_64-linux-gnu/libffi.so.6
  Title: gnome-shell crashed with SIGSEGV in g_type_check_instance_cast()
  UpgradeStatus: Upgraded to bionic on 2018-02-24 (0 days ago)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

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